Fastener



FIG. 1 is a top isometric view of the first embodiment of a fastener;

FIG. 2 is a bottom isometric view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view of thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a top isometric view of the second embodiment of a fastener;

FIG. 10 is a bottom isometric view thereof;

FIG. 11 is a front view thereof;

FIG. 12 is a rear view of thereof;

FIG, 13 is a left side view thereof;

FIG. 14 is a right side view thereof;

FIG. 15 is a top view thereof;

FIG. 16 is a bottom view thereof;

FIG. 17 is a top isometric view of the third embodiment of a fastener;

FIG. 18 is a bottom isometric view thereof;

FIG. 19 is a front view thereof;

FIG. 20 is a rear view of thereof;

FIG. 21 is a left side view thereof;

FIG. 22 is a right side view thereof;

FIG. 23 is a top view thereof; and,

FIG. 24 is a bottom view thereof.

The broken lines in the drawings illustrate portions of the fastener which form no part of the claimed design. 

CLAIM The ornamental design for a fastener, as shown and described. 